S.D.
My daughter used to tell me if she wanted more. I used to give her food directly off my plate. Maybe if he sees you eating it, he'll want it. From there, try giving him his own plate along with his own fork and spoon. The problems that you are having with meat and veggie is normal. The transition to table food is difficult without back teeth. It takes a lot of effort to chew meat and veggies. He may not be ready to put in that effort yet. Be patient, he'll get it.
Good luck.